Plate Tectonics

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Across
  1. 3. heat-driven cycles that occur in the air, ocean, and mantle
  2. 9. large, rigid pieces of Earth's
  3. 11. two or more lithospheric plates collide
  4. 13. its layered structure, composed of a solid inner core
  5. 16. Found a something
  6. 18. posits that Earth's continents were once joined in a single supercontinent
  7. 20. build up or create landforms
Down
  1. 1. reshape the Earth's surface
  2. 2. tectonic plate slides beneath another,
  3. 4. he view that everything always exists
  4. 5. supercontinent
  5. 6. hot, partially molten
  6. 7. move apart to make new crust
  7. 8. tectonic plates split apart
  8. 10. a part of the Earth crust
  9. 12. steep sides formed
  10. 14. the theory that Earth's outer shell
  11. 15. made below
  12. 17. seismically and volcanically active zone
  13. 19. tectonic plate margin